Patents by Inventor Ronald R. Roberge

Ronald R. Roberge has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: D304991
    Type: Grant
    Filed: March 19, 1987
    Date of Patent: December 12, 1989
    Inventor: Ronald R. Roberge